Face mask



FIG. 1 is a front perspective view of a face mask, showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof; and,

FIG. 5 is a left side view thereof.

The dot-dash broken lines define the bounds of the claimed design and form no part thereof. The broken lines shown in the figures depict portions of the face mask and environmental structure that form no part of the claimed design. 

CLAIM We claim the ornamental design for a face mask, as shown and described. 